On Dec. 21, 2012, many doomsday believers fear the apocalypse — anything from a rogue planet smashing into us to our world spinning end over end. However, the world should expect nothing more next year than the winter solstice, the longest night of the year, NASA says.

Many people point to the end of the Mayan Long Count calendar on Dec. 21, 2012 as evidence of the coming apocalypse, but astronomers have been quick to stress that there is nothing to be concerned about.

According to the ancient Mayan calendar, next year's winter solstice marks the end of a 144,000-day cycle. This cycle, which begins at the mythical Maya creation date, has already been repeated 12 times. The 13th will end in 2012, capping a full 5,200-year Mayan cycle of creation.

This date has long been shrouded in mystery, with many claiming that it will bring destruction to our planet.

Ppl should be concerned a lot more about asteroid Apophis when it will reach Earth around 2029-2030. This is the actual known and existing (and scientifically proven) threat to our world. Not some calendar from a long gone civilization that can mean end of the world or the calendar that tells you when to plant weed seeds...

Moon can't just lose it's orbit without something else affecting it. And whatever could affect moon to such degree it would also cause problems to Earth in the first place. So i see this scenario as very very very very (very) unlikely thing to happen...

Ppl should be concerned a lot more about asteroid Apophis when it will reach Earth around 2029-2030. This is the actual known and existing (and scientifically proven) threat to our world. Not some calendar from a long gone civilization that can mean end of the world or the calendar that tells you when to plant weed seeds...

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Asteroids aren't a threat. You see, what NASA will do is pick several guys and a woman to fly out into space and land on the asteroid. Once there, they will drill deep into the asteroid, and at th proper depth, they will plant nuclear bombs. After taking off, they will detonate the bombs and destroy the asteroid. There may occur a problem that means one man may have to stay behind to manually detonate, but we don't know for sure.